Circuit Theorems And Conversions MCQ

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• You cannot convert a voltage source to an equivalent current source, or vice versa.
  ক

  True

  খ

  False
• A certain current source has the values IS = 4 µA and RS = 1.2 MΩ. The values for an equivalent voltage source are
  ক

  4.8 µV, 1.2 MΩ

  খ

  1 V, 1.2 MΩ

  গ

  4.8 V, 4.8 MΩ

  ঘ

  4.8 V, 1.2 MΩ
• A certain voltage source has the values VS = 30 V and RS = 6 Ω. The values for an equivalent current source are
  ক

  5 A, 6 Ω

  খ

  30 A, 6 Ω

  গ

  5 A, 30 Ω

  ঘ

  30 A, 5 Ω
• Norton's equivalent current (IN) is an open-circuit current between two points in a circuit.
  ক

  True

  খ

  False
• Find the current in R2 of the given circuit, using the superposition theorem.<br> <img src="/images/question-image/electrical-engineering/circuit-theorems-and-conversions/1526022648-2.png" title="Circuit Theorems and Conversions mcq question image" alt="Circuit Theorems and Conversions mcq question image">
  ক

  16.7 mA

  খ

  33.3 mA

  গ

  50 mA

  ঘ

  16.6 mA
• A 12 mA current source has an internal resistance, RS, of 1.2 kΩ. The equivalent voltage source is
  ক

  144 V

  খ

  14.4 V

  গ

  7.2 V

  ঘ

  72 mV
• A 120 V voltage source has a source resistance, RS, of 60 Ω. The equivalent current source is
  ক

  2 A

  খ

  4 A

  গ

  200 mA

  ঘ

  400 mA
• The Thevenin equivalent voltage (V_TH) is the short-circuit voltage between two terminals in a circuit.
  ক

  True

  খ

  False
• A 680 Ω load resistor, RL, is connected across a constant current source of 1.2 A. The internal source resistance, RS, is 12 kΩ. The load current, RL, is
  ক

  0 A

  খ

  1.2 A

  গ

  114 mA

  ঘ

  1.14 A
• A practical current source has a finite internal resistance.
  ক

  True

  খ

  False
• An ideal voltage source has zero internal resistance.
  ক

  True

  খ

  False
• A practical voltage source has a nonzero internal resistance.
  ক

  True

  খ

  False
• An ideal current source has zero internal resistance.
  ক

  True

  খ

  False
• In a two-source circuit, one source acting alone produces 12 mA through a given branch. The other source acting alone produces 10 mA in the opposite direction through the same branch. The actual current through the branch is
  ক

  22 mA

  খ

  12 mA

  গ

  10 mA

  ঘ

  2 mA
• Find the Thevenin equivalent (V_TH and R_TH) between terminals A and B of the circuit given.<br> <img src="/images/question-image/electrical-engineering/circuit-theorems-and-conversions/1526022625-3.png" title="Circuit Theorems and Conversions mcq question image" alt="Circuit Theorems and Conversions mcq question image">
  ক

  562 mV, 167 Ω

  খ

  5.62 V, 167 Ω

  গ

  5.62 V, 188 Ω

  ঘ

  562 mV, 188 Ω
• Referring to the given circuit, determine V_TH and R_TH if a 68 Ω resistor is connected in parallel across R2 and R3.<br> <img src="/images/question-image/electrical-engineering/circuit-theorems-and-conversions/1526022600-8.png" title="Circuit Theorems and Conversions mcq question image" alt="Circuit Theorems and Conversions mcq question image">
  ক

  3.3 V, 148 Ω

  খ

  330 mV, 148 Ω

  গ

  3.3 V, 68 Ω

  ঘ

  330 mV, 68 Ω
• Some circuits require more than one voltage or current source.
  ক

  True

  খ

  False
• An 18 V source has an internal resistance of 70 Ω. If a load resistance of 33 Ω is connected to the voltage source, the load power, PL, is
  ক

  0 W

  খ

  1 W

  গ

  175 mW

  ঘ

  18 mW
• A 12 V source has an internal resistance of 90 Ω. If a load resistance of 20 Ω is connected to the voltage source, the load power, PL, is
  ক

  2.38 mW

  খ

  2.38 W

  গ

  238 mW

  ঘ

  23.8 W
• A 120 Ω load is connected across a voltage source with VS = 12 V and RS = 8 Ω. The voltage across the load is
  ক

  11.25 V

  খ

  0 V

  গ

  12 V

  ঘ

  1.13 V
• A 120 Ω load is connected across an ideal voltage source with VS = 12 V. The voltage across the load is
  ক

  0 V

  খ

  12 V

  গ

  120 V

  ঘ

  Cannot be determined
• Referring to circuit given, if R1 is changed to a 68 Ω resistor, what will be the current through it? <br> <img src="/images/question-image/electrical-engineering/circuit-theorems-and-conversions/1526022563-5.png" title="Circuit Theorems and Conversions mcq question image" alt="Circuit Theorems and Conversions mcq question image">
  ক

  0.16 A

  খ

  0.24 A

  গ

  0.2 A

  ঘ

  0.04 A
• Find the Thevenin equivalent (VTH and RTH) between terminals A and B of the circuit given below.<br> <img src="/images/question-image/electrical-engineering/circuit-theorems-and-conversions/1526022532-9.png" title="Circuit Theorems and Conversions mcq question image" alt="Circuit Theorems and Conversions mcq question image">
  ক

  4.16 V, 120 Ω

  খ

  41.6 V, 120 Ω

  গ

  4.16 V, 70 Ω

  ঘ

  41.67 V, 70 Ω
• Find the Norton circuit, that is, I_IN and R_N, for the circuit given below.<br> <img src="/images/question-image/electrical-engineering/circuit-theorems-and-conversions/1526022501-4.png" title="Circuit Theorems and Conversions mcq question image" alt="Circuit Theorems and Conversions mcq question image">
  ক

  478 mA, 12.8 Ω

  খ

  750 mA, 12.8 Ω

  গ

  478 mA, 6.8 Ω

  ঘ

  750 mA, 6.8 Ω
• Conversions between delta-type and wye-type circuit arrangements are useful in certain specialized applications.
  ক

  True

  খ

  False
• A 470 Ω RL is connected across a voltage source, VS, of 120 V. The source's internal resistance, RS, is 12 Ω. What is the output voltage across the load?
  ক

  120 V

  খ

  0 V

  গ

  117 V

  ঘ

  12 V
• A 2 Ω RL is connected across a voltage source, VS, of 110 V. The source's internal resistance is 24 Ω. What is the output voltage across the load?
  ক

  8.5 V

  খ

  85 V

  গ

  0 V

  ঘ

  110 V
• Referring to the given circuit, the voltage and current for the load resistor, RL, is <br> <img src="/images/question-image/electrical-engineering/circuit-theorems-and-conversions/1526022465-7.png" title="Circuit Theorems and Conversions mcq question image" alt="Circuit Theorems and Conversions mcq question image">
  ক

  450 mV, 4.5 mA

  খ

  4.50 V, 45 mA

  গ

  4.50 V, 4.5 mA

  ঘ

  450 mV, 45 mA
• Find the current through R1 in the given circuit. <br> <img src="/images/question-image/electrical-engineering/circuit-theorems-and-conversions/1526022436-14.png" title="Circuit Theorems and Conversions mcq question image" alt="Circuit Theorems and Conversions mcq question image">
  ক

  0.16 A

  খ

  0.24 A

  গ

  0.2 A

  ঘ

  0.04 A
• Find the current through R2 of the given circuit. <br> <img src="/images/question-image/electrical-engineering/circuit-theorems-and-conversions/1526022415-13.png" title="Circuit Theorems and Conversions mcq question image" alt="Circuit Theorems and Conversions mcq question image">
  ক

  30.7 mA

  খ

  104 mA

  গ

  74 mA

  ঘ

  134 mA